Amellus tridactylus Dc.

Prostrate to erect, annual herb, 20-150 mm high, with spreading pubescence, not appressed-pubescent. Leaves alternate, linear-oblanceolate, entire or 1-or 2-dentate. Capitulum radiate, solitary, pedunculate; involucre hemispherical or cup-shaped; bracts linear-lanceolate to lanceolate, imbricate, hairy. Receptacle paleate, similar to involucral bracts but smaller. Ray florets female, obvious, blue to blue-purple or sometimes white. Disc florets bisexual, many, 5-lobed, yellow, sometimes flushed reddish purple. Flowering time Aug.-Feb. Pappus of scales and barbellate bristles. Cypselae obovate to cordate, brown, hairy.